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LCM of 766, 420, 155, 781

Created By : Jatin Gogia
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023


Find the LCM of 766, 420, 155, 781 with the LCM of Two or More Numbers Calculator. Here we are teaching you two different methods through which you can calculate the LCM of 766, 420, 155, 781. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 766,420,155,781

Given numbers are 766,420,155,781

The least common multiple of numbers can be find using the prime factorization method or LCM formula.

The LCM of 766,420,155,781 is 3894581460.

Find LCM of 766,420,155,781 with Prime Factorization


2 766, 420, 155, 781
5 383, 210, 155, 781
383, 42, 31, 781

Multiply the prime numbers at the bottom and the left side.

2 x 5 x 383 x 42 x 31 x 781 = 3894581460

Therefore, the lowest common multiple of 766,420,155,781 is 3894581460.

LCM Formula to Find Lowest Common Multiple of 766,420,155,781

LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}

Firstly, we have to find the product of all the numbers.

766 x 420 x 155 x 781 = 38945814600

Then, let us find the GCF of these five numbers. To do so, we have to list down the factors for each number and choose the highest factor that is in all of the lists.

766 : 1, 2, 383, 766

420 : 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420

155 : 1, 5, 31, 155

781 : 1, 11, 71, 781

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 766,420,155,781, is 1.

Now, the common factors can be found like this.

766:2x 383

420:2x 2x 3x 5x 7

155:5x 31

781:11x 71

From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.

2x 5 = 10

Therefore, the value for common factors is 10.

Now that we have all the elements of the formula, we can plug them in to calculate the LCM.

LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}

LCM = 38945814600/(1x10)

LCM = 38945814600/10

LCM = 3894581460

Thus, we can understand that the LCM of 766,420,155,781 is 3894581460.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 766, 420, 155, 781

1. What is the LCM of 766, 420, 155, 781?

Answer: LCM of 766, 420, 155, 781 is 3894581460.

2. How to calculate the LCM of 766, 420, 155, 781?

The LCM can be found using two methods. You can either use the LCM formula or the prime factorization method to calculate the LCM of 766, 420, 155, 781.

3. What is the LCM formula?

The LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}.